When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B2790 | ID BOX EEPROM Malfunction | An internal malfunction occurs in the ID code box (immobiliser code ECU) (EEPROM access malfunction) (1 trip detection logic*). | ·
ID code box (immobiliser code ECU) ·
Certification ECU (smart key ECU assembly) |
DTC output confirmation operation:
An immobiliser set/unset operation is performed (the engine switch is turned off or on (IG) while the electrical key transmitter sub-assembly is being carried). |
*: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
·
Engine starting: Engine cannot be started next time ·
Engine stopped: Engine cannot be started |
- |
| DTC No. | Data List and Active Test |
|---|---|
| B2790 | - |
When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
Before replacing the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU), refer to the Service Bulletin.
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
Replace the ID code box (immobiliser code ECU) with a new one.
Refer to the Service Bulletin.
| Proceed to |
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| NEXT |
NEXT
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Entry&Start / Clear DTCs.
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Register the recognition codes to the ECUs.
Refer to the Service Bulletin.
| Proceed to |
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| NEXT |
NEXT
Register the ECU communication ID codes.
Refer to the Service Bulletin.
| Proceed to |
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| NEXT |
NEXT
Enter the following menus: Body Electrical / Entry&Start / Trouble Codes.
Check for DTCs.
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
| Result | Proceed to |
|---|---|
| DTC B2790 is not output. | A |
| DTC B2790 is output. | B |
A
B